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6. MAINTENANCE
WARNING
The following instructions are executed by qualified personnel only. To avoid electrical shock, do not perform any
servicing other than the operating instructions unless you are qualified to do so.
6-1 Fuse Replacement
If the fuse blows, the power lamp indicators will not light and the instrument will not start. The fuse holder should not
normally be opened unless a problem has been caused to the unit. Try to determine and correct the cause of the blown
fuse and replace with a fuse of correct rating and type (see page 7 ) on the rear panel (see fig. 4-2).
WARNING.
For continued fire protection. Replace fuse only with 250V fuse of the specified type and
rating, and disconnect power cord before replacing fuse.
6-2 Line Voltage Conversion
The primary winding of the power transformer is tapped to permit operation from 115V, or 230VAC 50/60Hz line
voltage. The Conversion from one line voltage to another is done by changing the line voltage selector switch as shown
in Fig. 4-2. The rear panel identifies the line voltage to which the unit was factory set. To convert to a different line
voltage, perform the following procedure:
(1)Make sure the power cord is unplugged.
(2)Adjust the line voltage selector switch to the desired line voltage position.
(3)A change in line voltage may also require a corresponding change of fuse value. Install the correct fuse value as
listed on rear panel.
6-3 Cleaning
To clean the instrument, use a soft cloth dampened in a solution of mild detergent and water. Do not spray cleaner
directly onto the unit because it may leak into the cabinet and cause damage. Do not use chemicals containing benzine,
benzene, toluene, xylene, acetone, or similar solvents. Do not use abrasive cleaners on any portion of the oscilloscope.
Summary of Contents for 632 FG
Page 1: ......
Page 9: ... 8 4 PANEL INTRODUCTION Fig 4 1 Front Panel Fig 4 2 Rear Panel ...
Page 19: ... 18 7 BLOCK DIAGRAM ...
